Mechanism for wiring edges of covers or analogous articles



(No Model.) 2 Sheets-Sheet 1.

H; H. HULL. MEGHAMSMFOR WIRING EDGES 0F COVERS 03 ANALOGOUS ARTICLES.No. 588,749. Patented Aug. 24,1897.

I 7, l \2 d/ a I d/ (No Model.) 2 Sheets-Sheet 2. H. H. HULL. MECHANISMFOR WIRING BDGES OF COVERS 03 ANALOGOUS ARTICLES.

No. 588,749. Patented Aug. 24,1897.

Ym: mums FEYERS co. m cio-umq, WASHINGTON o. c.

- UNITED STATES PATENTv OFFIGE.

HERBERT H. HULL, oE CLEVELAND, orno.

MECHANISM FOR WIRING EDGES F :CQVERS OR ANALOGOUS ARTICLES.

SPECIFICATION forming part of Letters Patent No. 588,749, dated August24, 1897.

Application filed August 3, 1896.

- which it appertains to make and use the same.

. when the opposite end of said article is closed.

So far as I now know the mechanism hereinafter described is the firstmechanism by which this result can be attained.

The object of the specific embodiment o my invention which the drawingsshow is to complete a cover wherein the ripping-wire is embraced by theinwardly-turned edge of the cover and has one end projecting outwardlyfrom the cover.

The invention consists in the construction and combination of partswhich are hereinafter described, and definitely pointed out in theclaims.

In the drawings, Figure 1 is a central sectional elevation of my wiringmechanism before it begins to act. Fig. 2 is a central sec tionalelevation of said mechanism, showing the parts in the relative positionwhich they occupy just as the wiring operation is completed. .Fig. 3 isa bottom view of the upper or movable part of the apparatus.

Referring to the parts by letters, A represents the bed-plate, having acircular recess a in its top.

B represents a circular platen which fits said recess and is verticallymovable therein. It is subject to a constant pressure upward, which maybe produced by a series of springs b,which are contained in sockets a inthe bedplate, which springs thrust upward against pins 1) on the underside of the platen B. The upward movement of the platen is limited byany suitable mechanism-as, for ex- Serial No. 601,433. (No model.)

ample, pins 12 which pass upward through and down by suitablemechanismas, for example, the plunger of. a die-press-whichis not shown.

, In the center of this plunger, extending from the bottom to near thetop, is a recess 0. Near the bottom of this plunger this recess isenlarged, so as to be adapted to receive the expanding ring E, the saidenlargement being indicated by the referenceletter 0'. The. formation ofthis recess necessarily produces the depending annular flange c", whichsurrounds it.

, D represents a circular pressure plate which is formed upon or securedto the lower end of the stem cl, which stem passes up through therecesses c c and through a hole in the top of the plunger and is guidedin its movements relative to said plunger by engaging therewith. Uponthe projecting end of the stem (Z a nut d is screwed. A coilspring 01lies in the recess 0, surrounding the stem cl, and it thrusts endwiseagainst a'shoulder d upon the stem and against the top wall of therecess 0 in the plunger. The force of this spring is constantly exertedto move the plate D and stem cl downward relative to the plunger 0,which downward movement is limited by the nut d.

In the enlarged recess 0 and embracing the stem at is an expanding ringE. This ring is composed of four (more or less) sections (2-, which areheld in the proper relation to each other by an elastic-rubber ring e,which embraces them. 6 represent pins which project through the bottomof the ring-sections. The heads e of said pins 'are movable in recessese in said sections, which recesses contain coilsprings e which-thrustendwise against the heads of the pins and against screw-plugs e in theupper ends of said recesses. The lower ends of these pins bear upon thetop of the plate D, and-the springs c exert a constant force tending to,move the expanding ring upward relative to said plate D. On the lowerend of the stem d, adjacent to the plate D, an annular outwardly-beveledsurface (1* is formed.

An annular depending wedge-shaped flange c is formed upon the plunger inthe recess 0 around the stem d. In the lower edge of the plunger 0 isformed the annular curlinggroove 0 which is shaped so that when thegroove engages with the top of the cover it bends said top inward anddownward. The outer periphery of this groove extends clownward below theinner edge of the groove and embraces the top of the cover during thecurling operation.

When performing the functions for which the described mechanism isorganized, the parts thereof move in the following manner: The cover G,in which the wire H has been placed, substantially as shown in Fig. 1,is placed upon the platen B. One end of the wire I-I extends out througha notch or slot 9 in the edge of the cover, and this projecting end ofthe wire lies in a notchj in the topof a vertically-movable pin J, whichis mounted in the bed-plate A and is moved upwardly by a coil-springj.The plunger 0 is now moved down. This movement is transmitted throughthe springs (Z and stem (Z to the plate D, which plate enters the coverand strikes the bottom thereof. The further downward movement of saidplate D presses upon platen B and moves it down to the bottom of therecess in which it lies. As the plunger continues to move down thewedgeshaped flange c enters between the ring-sections and the stem andpresses said ring-sections in two directions--viz: downward andoutward-with the result of expanding the upper end of the ring slightly.At this stage of the operation of the parts only a part of thewedge-shaped flange enters between the stem and ring sections.

As the expanding ring moves down by reason of the downward pressureabove referred to the ring-sections are brought into engagement with thebeveled surface (Z on the stem, whereby the lower parts of saidring-sections are moved outward. The flange e enters the cover andpasses below the wire H, the ring expanding during this downwardmovement. Just after said flange 6 passes below the wire the ring willhave expanded sufficiently to carry said flange under the wire, wherebythe continue to move down, but the plunger movesthe faster, because thedownward movement of the expanding ring is resisted by an increase inforceviz., the force of the springs e which as theyneartheircompressionlimit more and more resist the force tending to compress them. As thering moves down its reaches the end of its downward movement, I

at which time the plunger has overtaken it, the wedge-shaped flange chas been completely inserted between the ring-sections and the stem, theparts of the device are in the position as shown in Fig. 2, and thewiring of the edge of the cover is now completed.

The plunger in its downward movement strikes the pin J and moves it downagainst its spring, and the projecting end of the wire enters acorresponding notch c in the lower edge of theplunger. The plunger 0 isimmediately retracted, and all of the parts substantially reverse thedescribed movements until they resume the position shown in Fig. 1, atwhich time the completed cover may be removed and a new one substitutedand the described operation repeated indefinitely.

It may be here stated that the flange e need not, although it preferablyshould, be a complete ring. The essential characteristic of theexpanding ring, so called, is that it shall in clu de outwardly andinwardly movable supports for the wire during the wiring operation, andthese support-s must be arranged in a circle, so as to support all partsof the wire, and they must be vertically movable relative to the cover,so that they may move into and out of said cover.

Having described my invention, I claim 1. In a device for wiring theedge of covers and analogous articles, the combination of a platen forsupporting the cover to be wired, and a vertically-movable plungerhaving a recess in its lower end, a depending annular flange whichsurrounds said recess, and an annular curling-groove in the lower edgeof said flange, with an expanding ring centrally supported within saidrecess, means for normally contracting it to its smallest diameter, andmechanism whereby the downward movement of the plunger moves the saidexpanding ring downward into the cover supported upon the platen, andmechanism for expanding said ring within said cover, whereby its edgepasses beneath and supports the wire as the edge of the cover is turnedinward by the further downward movement of the plunger, substantially asand for the purpose specified.

2. In a device for wiring the edge of covers and analogous articles, thecombination of a 'plunger having a recess in its lower end, a

depending annular flange surrounding said recess, and an annularcurling-groove in the lower edge of said flange, with a stem, verticallymovable through said plunger, having a horizontal plate upon its lowerend, a spring acting to force said stem downward relative to theplunger, an expanding ring embracing said stem within the recess in theplunger, a spring for contracting said ring around said stem, and meansfor expanding said ring when it is moved down upon said stein by the IIOaction of the plunger, substantially as and for the purpose specified.

3. In a device for wiring the edge of covers and analogous articles, thecombination of a vertically-movable plunger having a recess in its lowerend, an annular flange surrounding said recess, and an annularcurling-groove in the lower edge of said flange, with a stemverticallymovable through said plunger,having the beveled surfacedfl a plate onthe lower end thereof, a spring for moving said stem downward relativeto the plunger, an expanding ring embracing said stem, a spring forcontracting said ring, and a wedge-shaped flange rigid with the plunger,depending from the top of said recess and embracing said stem, andsprings exerting their force to separate said plate D and expandingring, sub- I stantially as and for the purpose specified.

4. In a device for wiring the edge of covers, cans, and analogousarticles, the combination of a bed-plate A, the verticallymovable platenB, and the vertically-movable springpin J having a notch in its upperend, with a plunger 0 havin gin its lower edge the annularcurling-groove c and a notch 0 with a plate D, its stem which is movablein suitable bearings in the plunger, a spring 01 encircling said stem,an expanding ring E embracing said stem, spring-actuated pins carried bysaid ring engaging withsaid plate D, the Wedge-shaped flange c on theplunger, and a beveled surface 61 on the stem for expandin g said ring,substantially as and for the purpose specified.

In testimony whereof I affix my signature in presence of two witnesses.

HERBERT H. HULL.

Witnesses:

E. L. THURSTON, E. B. GILCHRIST.

